You need a strong core to hover over a public toilet, and firm biceps to carry boxed wine, so train your body for real life's stupidly simple ordinary tasks-fifty, to be exact. Get in shape with 50 stupid reasons to work out and 50 exercises to prepare your stupid muscles for each of them.

• The Stupid Fit Couple (@stupidfitcouple) are Karley Phillips and Aaron Denius, a real-life couple with a passion for fitness.
• Knock Knock Books: fun gifts or workout motivation? Both!
• Paperback; 7 x 9.5 inches; 160 pages; full-color throughout; ribbon page marker